8221768 has 16 divisors (see below), whose sum is σ = 15678000. Its totient is φ = 4040976.

The previous prime is 8221753. The next prime is 8221793. The reversal of 8221768 is 8671228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8238 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (979875).

Almost surely, 2^8221768 is an apocalyptic number.

It is an amenable number.

8221768 is a deficient number, since it is larger than the sum of its proper divisors (7456232).

8221768 is a wasteful number, since it uses less digits than its factorization.

8221768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484 (or 17480 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 8221768 is about 2867.3625511958. The cubic root of 8221768 is about 201.8312481426.

The spelling of 8221768 in words is "eight million, two hundred twenty-one thousand, seven hundred sixty-eight".